DE406504C - Process for the preparation of yellow-brown stain-coloring disazo dyes - Google Patents

Process for the preparation of yellow-brown stain-coloring disazo dyes

Info

Publication number
DE406504C
DE406504C DED43594D DED0043594D DE406504C DE 406504 C DE406504 C DE 406504C DE D43594 D DED43594 D DE D43594D DE D0043594 D DED0043594 D DE D0043594D DE 406504 C DE406504 C DE 406504C
Authority
DE
Germany
Prior art keywords
yellow
coloring
preparation
disazo dyes
brown stain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DED43594D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Durand and Huguenin AG
Original Assignee
Durand and Huguenin AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Durand and Huguenin AG filed Critical Durand and Huguenin AG
Priority to DED43594D priority Critical patent/DE406504C/en
Application granted granted Critical
Publication of DE406504C publication Critical patent/DE406504C/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
    • C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
    • C09B35/14—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from hydroxy compounds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

Verfahren zur Darstellung gelbbrauner beizenfärbender Disazofarbstoffe. Zusatz zum Patent 405254 In dem Hauptpatent wurde ein Verfahren zur Darstellung von rotstichig gelben beizenfärbenden Disazofarbstoffen beschrieben, welches darin besteht, daß eine tetrazotierte 4 = 4@-Diaminodiaryl-2 : 2 =disulfosäure mit 2 Mol. der m-Kresotinsäure kombiniert wird. Die so entstehenden Farbstoffe liefern im Chromdruck auf Baumwolle wasch-, seifen-und chlorechte Farbtöne.Process for the preparation of yellow-brown stain-coloring disazo dyes. Addition to patent 405254 In the main patent a method for representation of reddish-tinged yellow stain-staining disazo dyes, which therein consists that a tetrazotized 4 = 4 @ -diaminodiaryl-2: 2 = disulfonic acid with 2 mol. the m-cresotinic acid is combined. The resulting dyes deliver in chrome printing Wash, soap and chlorine-proof colors on cotton.

Es wurde nun weiter gefunden, daß durch Kombination der genannten Tetrazoverbindungen mit p-Kresotinsäure an Stelle der m-Kresotinsäure Beizenfarbstoffe von braungelber Nuance entstehen. Die entstehenden Produkte zeigen im übrigen die gleichen wertvollen Echtheitseigenschaften wie die Farbstoffe des Hauptpatents.It has now been found that by combining the above Tetrazo compounds with p-cresotinic acid instead of m-cresotinic acid mordant dyes of brownish yellow nuance. The resulting products show the rest of the same valuable fastness properties as the dyes of the main patent.

Das Verfahren wird erläutert durch folgendes Beispiel.The procedure is illustrated by the following example.

Beispiel. 34,4 kg Benzidin-2: 2'-disulfosäure werden in io,6 kg Soda und 3001 Wasser gelöst und zu dieser Lösung 14 kg Natriumnitrit zugegeben. Hernach wird unter gutem Rühren auf eine. Mischung von 5o kg Salzsäure und 5o kg Eis gegossen, wobei die Temperatur auf 13 bis 15° gehalten werden soll. Die sich bildende Tetrazov erbindung der Benzidindisulfosäure scheidet sich zum größten Teil aus.Example. 34.4 kg of benzidine-2: 2'-disulfonic acid are dissolved in 10.6 kg of soda and 3001 of water are dissolved and 14 kg of sodium nitrite are added to this solution. Afterwards is stirred well on one. Mixture of 50 kg hydrochloric acid and 50 kg ice poured, the temperature should be kept at 13 to 15 °. The forming Tetrazov The compound of benzidinedisulfonic acid is largely eliminated.

Die dünnflüssige Paste wird nach beendeter Diazotierung noch einige Zeit durchgerührt und hernach in eine kalte Lösung von 31 kg 1>-Kresotinsäure und 4o kg Soda in i5o 1 `'Wasser einlaufen gelassen.After the diazotization is complete, the liquid paste will still be a few Stirred time and then in a cold solution of 31 kg of 1> -cresotinic acid and 40 kg of soda is poured into 15o 1 '' of water.

Die Kupplung wird in bekannter Weise durch Zusatz von Natronlauge zu Ende geführt. Der Farbstoff wird ausgesalzen, filtriert, gepreßt und getrocknet. Er liefert mit Chrombeize im Kattundruck braungelbe «-asch- und chlorechte Töne.The coupling is carried out in a known manner by adding sodium hydroxide solution brought to the end. The dye is salted out, filtered, pressed and dried. With chrome stain in calico print, it delivers brown-yellow, ash and chlorine-like shades.

In diesem Beispiel kann die Benzidindisulfosäure durch die entsprechende Tolidindisulfosäure ersetzt werden. Es wird ein Farbstoff von ganz ähnlichen Eigenschaften erhalten.In this example, the benzidine disulfonic acid can be replaced by the corresponding Tolidinedisulfonic acid to be replaced. It becomes a dye with very similar properties obtain.

Claims (1)

PATENT-ANsPRUcH: Abänderung des durch das Hauptpatent geschützten Verfahrens, darin bestehend, daß zur Darstellung von braungelben beizenfärbenden Disazofarbstoffen aus einer tetrazotierten 4:4'-Diaminodiaryl-2:2'-disulfosäure die m-Kresotinsäure durch die p-Kresotinsäure ersetzt wird.PATENT CLAIM: Modification of what is protected by the main patent Method consisting in that for the representation of brown-yellow stain-coloring Disazo dyes from a tetrazotized 4: 4'-diaminodiaryl-2: 2'-disulfonic acid the m-cresotinic acid is replaced by the p-cresotinic acid.
DED43594D 1923-05-03 1923-05-03 Process for the preparation of yellow-brown stain-coloring disazo dyes Expired DE406504C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED43594D DE406504C (en) 1923-05-03 1923-05-03 Process for the preparation of yellow-brown stain-coloring disazo dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED43594D DE406504C (en) 1923-05-03 1923-05-03 Process for the preparation of yellow-brown stain-coloring disazo dyes

Publications (1)

Publication Number Publication Date
DE406504C true DE406504C (en) 1924-11-21

Family

ID=7047706

Family Applications (1)

Application Number Title Priority Date Filing Date
DED43594D Expired DE406504C (en) 1923-05-03 1923-05-03 Process for the preparation of yellow-brown stain-coloring disazo dyes

Country Status (1)

Country Link
DE (1) DE406504C (en)

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